Stateless function components without React.createElement or JSX?

react-docgen is unable to find stateless function components that don't contain JSX or React.createElement call expressions.

This might be the case when some helper library is used. This will also fail if the official React.DOM helpers are used (https://github.com/reactjs/react-docgen/pull/71). Another failing case would be if only React components are returned, but React.createElement was never called because the components were wrapped in React.createFactory.

What about adding support for another heuristic, such as having a propTypes property (and to be even more specific, a propTypes property with an object containing React.PropTypes entries).

I'm happy to implement this and add tests if this sounds reasonable to the maintainers.

まず、react-docgen における既存のステートレス関数コンポーネントの検出を追跡し、React.createElement を使用するコンポーネントのテストを確認します。提案された propTypes ヒューリスティックを React.DOM ヘルパーおよび React.createFactory のケースと比較します。これらのコンポーネントが既存の検出動作を壊すことなく検出され、テストでサポートされるパターンがカバーされていれば完了です。